Comparing improved actions for SU(2)

Abstract

In order to help the user in choosing the right action a performance comparison is done for seven improved actions. Six of them are Symanzik improved, one at tree-level and two at one-loop, all with or without tadpole improvement. The seventh is an approximate fixed point action. Observables are static on- and off-axis two-body potentials and four-body binding energies, whose precision is compared when the same amount of computer time is used by the programs.

Comments: 3 pages, 3 colour eps figures. Presented at LATTICE97